Jan 8.26

Argonaut Octopus

A species with a worm-like detachable penis that can swim off alone to mate with females.

Diphallia

A rare condition of double penis, occurring in 1 in 5-6 million births, often alongside other congenital malformations.

Baculum

Also known as the penile bone or os penis, common among most mammals; greatly reduced in great apes.

Phimosis

A condition characterized by too much foreskin covering the glans of the penis.

Paraphimosis

A condition where the foreskin, once retracted, cannot be returned and leads to swelling.

Erectile Dysfunction

The inability to maintain an erection sufficient for satisfactory sexual performance.

Hydraulic event

The process by which an erection occurs, involving blood flow and vascular engorgement.

Nitric Oxide (NO)

A chemical released during sexual stimulation that increases blood flow to the penis, leading to an erection.

Peyronie’s Disease

A condition where scar tissue forms in the penis, causing curvature during erection.

Sildenafil (Viagra)

A medication that prolongs erection by inactivating phosphodiesterase-5, the chemical that ends an erection.

Corpus Spongiosum

The spongy body in the penis that contains the urethra and enlarges at the tip to form the glans.

Corpora Cavernosa

Two cylindrical structures in the penis that fill with blood and stiffen during erection.

Post-Erection

The process in which the body releases phosphodiesterase-5 to end an erection by reducing cyclic GMP.

Small Penis Syndrome

A psychiatric disorder characterized by a preoccupation with an imagined defect in penis size.

Growers vs. Showers

Terms to describe penis types; growers have more elastin and less collagen, while showers have more collagen and less elastin.

Buried or Hidden Penis Syndrome

A condition where the penis is concealed by fat or skin folds, often associated with obesity.

Erections occur

Through the release of NO, allowing blood to fill the relaxed vascular channels in the penis.

Male-male aggression

One of the social cues symbolized by an erect primate penis.

Temperature, fear, and obesity

Factors that can affect perceived penis size.

Average Erect Penis Length

Typically averages 5.6 inches.

Semi-functional

Describes the functionality of the penis in cases of diphallia, where it may not fully function.